PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21170Screw,cap,socket Head

Charles Reed Knight Jr Dba Knight's Armament Company · NSN 5305-01-547-8842 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-547-8842 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-547-8842. Primary manufacturer part number: 21170.
Features
  • Screw,cap,socket Head — FSC 5305
  • 1 verified cross-reference
  • Primary manufacturer: Charles Reed Knight Jr Dba Knight's Armament Company
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-547-8842, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Charles Reed Knight Jr Dba Knight's Armament Company. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-547-8842
Primary Part Number21170
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerCharles Reed Knight Jr Dba Knight's Armament Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5935-00-075-700810279478 INTERCHANGEABLE
Adapter,connector
Us Army Aviation and Missile Command
5330-00-210-5294530928 INTERCHANGEABLE
Gasket,push Rod Hou
Sealcraft Corporation
4320-00-470-638621171 INTERCHANGEABLE
Pump,rotary
Clayton Manufacturing Company
5950-01-007-9314989112-33B INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Dba Raytheon
4510-01-263-0096 INTERCHANGEABLE
Drain,lavatory
5975-01-282-882521170 INTERCHANGEABLE
Adapter,clevis
Science Applications International Corporation
4820-01-418-004821170-001 INTERCHANGEABLE
Valve,linear,directional Control
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4820-01-418-004921170-850-1 INTERCHANGEABLE
Sleeve and Slide,directional Con
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
2640-01-429-628221-170 INTERCHANGEABLE
Valve,pneumatic Tire
Myers Tire Supply Distribution Inc Div Akron Branch
Cross-Reference Index
Part NumberManufacturer
21170 PRIMARY Charles Reed Knight Jr Dba Knight's Armament Company (USA)
Related Parts
5935-00-075-7008INTERCHANGEABLE
ADAPTER,CONNECTOR
10279478
5330-00-210-5294INTERCHANGEABLE
GASKET,PUSH ROD HOU
530928
4320-00-470-6386INTERCHANGEABLE
PUMP,ROTARY
21171
5950-01-007-9314INTERCHANGEABLE
COIL,RADIO FREQUENCY
989112-33B
4510-01-263-0096INTERCHANGEABLE
DRAIN,LAVATORY
5975-01-282-8825INTERCHANGEABLE
ADAPTER,CLEVIS
21170
4820-01-418-0048INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
21170-001
4820-01-418-0049INTERCHANGEABLE
SLEEVE AND SLIDE,DIRECTIONAL CON
21170-850-1
2640-01-429-6282INTERCHANGEABLE
VALVE,PNEUMATIC TIRE
21-170

Frequently Asked Questions

What is NSN 5305-01-547-8842?

NSN 5305-01-547-8842 is a Screw,cap,socket Head, manufactured by Charles Reed Knight Jr Dba Knight's Armament Company, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-547-8842?

NSN 5305-01-547-8842 has 1 cross-referenced part number: 21170 (Charles Reed Knight Jr Dba Knight's Armament Company).

What NSN replaces 5305-01-547-8842?

There are 9 known substitutes for 5305-01-547-8842: 5935-00-075-7008, 5330-00-210-5294, 4320-00-470-6386 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21170?

Key specifications for 21170: End Item Identification: UNIVERSAL NIGHT SIGHT PART NUMBER 98621/O64E. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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